Oven door



March 15, 1938. w. H. SICKINGER 2,111,055

OVEN DOOR Filed Feb. 6, 1957 Patented Mar. 15, 1938 UNITED STATES OVEN noon William H. Sickinger,

Crown Stove Works, of Illinois Chicago, Ill., assignor to Cicero, 111., a corporation Application February 6, 1937, Serial No. 124,355

7 Claims.

This invention relates to closure members and hinges therefor and more particularly to stove oven doors.

The main objects of this invention are to provide an improved form of mounting for stove oven doors; to provide a door mounting for stove ovens having an improved form of spring for closing the door; to provide an improved mounting of this kind wherein the spring is located outside of the heat zone of the oven so asnot to be injured by the intense oven heat; to provide an oven door hinge which is easily accessible for purpose of replacement; and to provide an oven door mounting which will permit ready removal of the door.

An illustrative embodiment of this invention is shown in the accompanying drawing, wherein:-

Figure 1 is a fragmentary vertical section of an oven to which the invention is applied; the open position of the door being represented in dotted outline.

Figure 2 is a fragmentary front elevation of the same, taken from the right of Fig. 1; parts being broken away.

Figure 3 isa horizontal section of one corner of the oven, taken on the line 3-3 of Fig. 2.

Figure 4 is a perspective, on a reduced scale, of the improved spring and the linkage which connects it to the door.

Door mountings embodying this invention may be used in connection with various types of compartments and closure members but, in the specific construction herein illustrated, the invention is applied to a stove oven I having a hinged door 2 pivoted at its lower edge so as to be swingable outwardly to the dotted line position of Fig. 1. In the drawing I have illustrated only those portions of the oven which are related to the improved mounting.

The oven illustrated comprises bottom walls 3 and 4, spaced apart to provide an air chamber 5, and inner side walls 6 and outer side walls 1 which are spaced apart to provide a chamber 8 at each side of the oven for insulation purposes and for housing part of the door mounting. The forward edges of the inner walls are bent outwardly to provide flanges 9 against which the side edges of the door are adapted to seat. The lower edge of the door is adapted to seat against a plate H] which closes the front end of the chamber 5.

In the form shown, the door comprises an outer finishing panel II and an inner panel I 2 having interfitting rim flanges l3 and I4, respectively. The inner panel has an inwardly projecting bulge l5 which fits between the side walls 6 when the door is closed. Suitable insulating material, not shown, is preferably inserted between the panels.

The door is reinforced by a pair of L-shaped brackets l6 located between the panels H and I2 at the lower corners thereof. These brackets are preferably castings and are provided with tapped bosses I! for receiving screws 18 which pass through the inner panel I2. These brackets also form anchors for the hinges, each of which comprises a pair of sections 19 and 20 pivoted together by a pin 2|.

The sections [9 are rigidly secured to the brackets 16 by rivets 22 or the like, and the sections 20 are secured to a bar 23, which forms part of the stove frame, by screws 24 or other suitable fastening means. These hinge parts are'concealed by a removable finishing panel 25 which is channel shaped in cross section and which is detachably secured to the stove frame by bolts,

not shown. The outer face of this panel is substantially flush with the outer face of the door when the door is closed,

Formed'in the upper flange of the panel 25, is a pair of slots 26 for receiving the hinge sections l9 when the door is opened. In order to permit the door to clear the panel 25 when the door is swung outwardly, the connected ends of the hinge sections l9 and 20 are bent forwardly so as to position the hinge pin 2| close to the plane of the outer face of the door, as shown in Fig. 1.

Formed in the side edges of the brackets 16, are bosses 21 in which are seated pins 28 for attachment to the hooks 29 of a pair of arms 30 forming part of the door mounting. Slots 3| are formed in the inner door panel l2 at the side edges thereof for receiving the hooked ends of the arms 30. These arms extend rearwardly through slots 32 formed in the flanges 9 and the rear ends thereof are pivoted to levers 33 by pins 34. The levers 33 extend through slots 35 in the bottom wall 4 and are pivoted at 36 to brackets 31 which are mounted on the lower face of the bottom wall 4.

The lower ends of the levers 33 are connected by links 38 to the extremities of a leaf spring 39, the center of which is secured by a screw or bolt 40 to a bracket 4| which is secured to the bar 23 by a screw or bolt 42. The bracket 4| has a recess 43 in its forward edge to receive the lower edge of the plate I0.

In operation, the spring 39, acting through the linkage 3U, 33, 38 serves to urge the door into closed position. When the door is opened, the

arms 30 move forwardly through the slots 32, thereby rocking the levers 33 around the pivots 36 to place the spring 39 under tension.

With this improved construction it will be seen that the spring 39 is located outside of the heat zone in a place where it is readily accessible in the event replacement is necessary.

Although but one specific embodiment of this invention has been herein shown and described, it will be understood that details of the construction shown may be altered or omitted without departing from the spirit of the invention as defined by the following claims.

I claim:

1. In a device of the class described, a chamber having an opening in one side thereof, a door movable into and out of position to close said opening, a leaf spring mounted outside of said chamber to flex in a horizontal plane, and linkage connecting said door with said spring for resiliently holding said door in closed position.

2. In a' device of the class described, a frame having a chamber provided with an opening in one side thereof, a door for said opening, a leaf spring mounted on said frame outside of said chamber to flex in a horizontal plane, and means connecting said door With said spring for closing said door.

3. In a device of the class described, a frame having a chamber provided with an opening in one side thereof, a door for said opening, a leaf spring mounted on said frame outside of said chamber, a lever pivoted intermediate its ends on said frame, one end of said lever being connected to said spring,and an arm connecting the other end of said lever with said door for closing said door."

4. In a device of the class described, the combination with a frame having a chamber provided with an opening in one side thereof, a door for said opening, of door closing 'mechanism comprising a leaf spring mounted on said frame, and a lever and an arm pivotally connected together, said lever being pivoted intermediate its ends on said frame and connected at one end thereof to said spring, and said arm being detachably secured at its free end to said door.

5. In a device of the class described, the combination with a frame having a chamber therein provided with an opening in one side thereof, and a door hinged on said frame for closing said opening, of door closing mechanism located wholly outside ofsaid chamber, and comprising a lever and an arm pivotally connected at one end thereof, said arm being detachably connected to said 1 door at its other end, and said lever being pivoted intermediate its ends to said frame, and a spring connecting the other end of said lever to said frame.

-6. In a device of the class described, the combination with a frame having a chamber therein provided with an opening at one side thereof, and a door hinged on said frame for closing said opening, of door closing mechanism located outside of said chamber and comprising a leaf spring having its central portion rigidly secured to said frame to flex in a horizontal plane, a pair of upright levers pivotally mounted intermediate their ends on said frame and connected respectively'at their lower ends to the ends of said spring, and a pair of arms pivotally connected to the upper ends of said levers and detachably secured to said door.

7. In a device of the class described, bottom,

rear, and side Walls defining a chamber having an opening in'the front end thereof, a front wall framing said opening, a door adapted to seat against said front wall for closing said opening,

said front wall having a slot therein, a leaf spring WILLIAM H. SICKINGER. 

